Mechanical movement.



PATENTED MAR. 29, 1904.

G. H. NILBS. MECHANICAL MOVEMENT.

APPLIOATION FILED SEPT. 4. 1903.

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UNITED STATES Patented March 29, 1904.

GLENN H. NILES, OF NEW YORK, N. Y.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 7 55,919, dated March29, 1904. Application filed September 4, 1903. Serial No. 171,964. (Nomodel.)

To all whom it may concern:

Be it known thatI, GLENN H. NILEs,acitizen of the United States,residing in New York, borough of Brooklyn, in the State of New York,have invented certain new and useful Improvements in MechanicalMovements, of which the following isa specification.

The object of this invention is to furnish a simple and reliablemechanical movement by which forward-and-return motion is converted intomotion in one direction on a first forward impulse or stroke, rest onthe return motion, in opposite direction on the second forward impulseor stroke, and rest on the return-in other words, a mechanical movementin which a reciprocatory driving member moves the driven member only onthe forward strokes or impulses and moves it alternately in oppositedirections, returning' to original position between each forward strokewithout actuating the driven member on such returns.

The object is also to provide such a movement of this type as willpermit any desired leverage to be obtained between the driving anddriven members.

The invention consists of a mechanical movement comprising a drivingmember, a lever, a shiftable connecting rod pivoted to said drivingmember and located between the same and the lever, a driven memberconnected with said lever, and means for shifting said connecting-rodalternately into engagement with opposite arms of said lever.

The invention consists, further, in certain other combinations ofoperative parts, which will be fully described hereinafter and finallypointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of a mechanismconstructed according to my invention. Fig. 2 is a similar view of thesame mechanism, but with the parts in a different position; and Fig. 3is a side view of the mechanism with the parts in the same position asin Fig. 2.

Similar letters of reference indicate corre sponding parts.

Referring to the drawings, A represents the base-plate or support of themovement, which may be of any suitable form or shape for supporting theparts. Upon the base is mounted in a suitable hearing or bearings Z2 Z)a bar B capable of reciprocation longitudinally in the same andconstituting the driving member. To the base is pivoted at a suitablepoint,

as at 0, a lever C, having arms 0' 0 extending in opposite directionsfrom the fulcrum o. The driven member may consist. of a rod D, securedto or in engagement with the lever G by any suitable means, as by a link0 A connecting-rod E is pivoted at g to the driving member B and locatedbetween said member and the lever. For controlling the movement of theconnecting-rod so that upon the forward movement of the driving memberthe connecting-rod engages with one arm of the lever and on the returnmovement is shifted so as to engage on the next forward movement withthe other arm of the lever two shift-arms e e are employed, one'at'eachside of the connecting-rod, and links d d slidably connecting said armseach with the corresponding arm of the lever. The links are preferablymade of loop formas, for example, from suitable wireand are slidablyconnected or pivoted at one end to the arms of the lever C by anysuitable meansfor eX- ample, pins d d located in sockets of said arms.The connection With the shift-arms c e of the connecting-rod may be madeby means of pins ff, located in the forked ends of said arms. To secureuniformity of forward and return movement, each link is connected withits shift-arm at a point equidistant from the pivot of theconnecting-rod with the corresponding connectionpoint of the oppositelink. In like manner connection of the links, respectively, at oppositesides of the pivot of the lever C with the arms of the same is made atpoints equidistant from said pivot. In

order to limit the movement of the connecting-rod at each end of itsshifting movement,

stops h h are employed, which are formed by the end walls of a suitablerecess in the connecting-rod, or any other suitable means for limitingthe movement of the rod so that the same does not pass out of positionfor engaging the lever may be used.

Such being the general features of the construction, the operation is asfollows: The parts being in the position indicated in full lines in Fig.1, the driving member is given forward movement, as indicated by thearrow in Fig. 1. This causes forward movement of the connecting-rod E.As the outer or bearing end 2' of the same is at one side of a linebetween the pivots c g and in position to engage one arm of the lever C,in this case the arm 0, and is retained in such position by stop it,this forward movement of the driving member and the connectingrod causesmovement of the lever C and parts connected therewith, so that motion inforward direction is thus imparted to the driven member D. Forwardmotion of the driving member being discontinued, the parts come to restin the position indicated by dotted lines in Fig. 1. During the forwardmotion of the arm a the opposite arm 0 swings in backward direction andcarries with it the link 0?, which slides on the pin f Return motion isnow imparted to the driving member. This may be accomplished manually orby any suitable power mechanism or bya springfor example, thesprings/bit, one at each side of the driving member and secured at oneend to the bearing 6 of the base and at the other end to studs m m ofthe driving member, said springs having been placed under tension on theforward movement. Upon the return movement now taking place, were thefriction of the other parts moved sufiiciently to overcome theretardance to rearward movement offered by the driven member and leversaid driven member and lever would also be returned and all the partswould again assume the first position. It is necessary that the lever (1shall be under suflicient retardance to return movement to overcome thefriction due to shifting the connecting-rod into opposite position. Thisretarda-nce will ordinarily be afforded by the work being done by thedriven member or the mechanism to which that member is attached.Separate means may, however, be provided-as, for instance, a bearing 9?,upon the base A creating sufficient friction for the purpose. The lever0 being therefore stationary, rearward motion of the pivot 9 causes theconnecting-rod E to swing into the position indicated in full lines inFig. 2, the pin f moving rearwardly in the link d. Forward movement isnow imparted again to the driving member. This causes forward movementof the connecting-rod, and as the same is now in engagement with theopposite leverarm 0 the lever C is turned in opposite direction to itsfirst movement and causes a positive return of the driven member. Thearm 0 by this movement approaching the shift-arm 0, link (Z slidesrelatively thereto upon the pin f. The parts come to rest in theposition indicated in dotted lines in Fig. 2. Return movement of thedriving member now takes place. As in the first return movement, it alsois here necessary that there be greater retardance of the lever C thanthe re sistance offered by the friction produced in shifting theconnecting-rod. The bearing n afiords this, as before, and upon therearward movement the parts move into the first position. (Shownin fulllines in Fig. 1.) The operations may then be successively repeated.

It is obvious that the driven member'may be connected with the lever Cat any point in the length of the latter, the leverage obtained betweenthe driving and driven members being dependent on the location of thepoint of connection. In the mechanism illustrated the point ofconnection Z is beyond the stop it, and the driven member has thereforea longer movement than the driving member. It is also obvious that theproportions of the various parts may be varied from those shown withoutdeparting from the spirit of the invention.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A mechanical movement, consisting of a drivingmember, a lever, a shiftable connecting-rod pivoted to said drivingmember and located between the same and the lever, a driven memberconnected with said lever, and means for shifting said connecting-rodalternately into engagement with opposite arms of said lever,substantially as set forth.

2. Amechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever, a driven member connected withsaid lever, and means controlled by said lever for shifting saidconnecting-rod alternately into engagement with opposite'arms of saidlever, substantially as set forth.

3. A mechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever, a driven member connected withthe lever, shift-arms connected with said connectingrod, and meansoperatively connecting the arms of said lever with said shift-arms,substantially as set forth.

4. A mechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever, a driven member connected withthe lever, shift-arms connected with said connectingr d nd ext nd g atopposite sides of the same, and links slidably connecting the arms ofsaid lever each with the corresponding shift arm, substantially as setforth,

5. A mechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever, a driven member connected withthe lever, shift-arms connected with said connectingrod and extending atopposite sides of the same, and links pivoted to the arms of said leverand slidably connected each with the corresponding shift-arm,substantially as set forth.

6. A mechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever,

a driven member connected with the lever,

shift-arms connected with said connecting-rod and extending at oppositesides of the same, and links slidably connecting said shift-arms eachwith the corresponding lever-arm at points equidistant from the pivot ofthe connectingrod and the pivot of the lever respectively,

' substantially as set forth.

7. A mechanical movement, consisting of a driving member, a lever, ashiftable connectwith opposite arms of said lever, and stops projectingfrom said lever into the path of said connecting-rod, substantially asset forth.

9. A mechanical movement, consisting of a driving member, a lever, ashiftable connect' ing-rod pivoted to said driving member and locatedbetween the same and the lever, means for shifting said connecting-rod,a drivenmember connected with the lever, and means retarding said leverin excess of the operative resistance of said shifting means,substantially as set forth.

10. A mechanical movement, consisting of a driving member, a lever, alaterally-shiftable connecting-rod pivoted to said driving member andlocated between the same and the lever, means controlled by the leverfor shifting said connecting-rod, a driven member connected with thelever, means retarding said lever in excess of the operative resistanceof said shifting means, and means also in excess of said operativeresistance connected with the driving member for returning the same andoperating thereby said shifting means, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GLENN H. NILES. Witnesses:

JOHN A. DAVISON, VIOLA A. BROMLEY.

